Turn-table.



T. C. BEACH.

TURN TABLE.

APPLxoATIoN FILED JUNE 16, 1911.

19017,@33. Patented Feb. 13,1912.

L Il

AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA cA THADDEUS C. BEACH, OF ST. JOHNS, MICHIGAN.

TURN-TABLE.

Application led .Tune 16, 1911.

Specication of Letters Patent.

Patented Feb. 13, 1912.

Serial No. 633,494.

To all whom it may concern:

Be it known that I, THADDnUs C. BEACH, a citizen of the United States of America, residing at St. Johns, in the county of Clinton and State of Michigan, have invented certain new and useful Improvements in Turn-Tables, of which the following is a specification, reference being had therein to the accompanying drawings.

In the construction of turn-tables and more especially those designed for garages for automobiles and the like it is advisable that they be given such conformation as will provide efficient drainage so that they can be used for cleaning and washing the vehicles. It is also desirable that they turn easily and that the construction be such that the parts cannot become displaced sufficiently to cause any binding or undue wear.

This invention relates to turn-tables for use in automobile garages provided with means affording eliicient drainage together with provision for proper lubrication and the like, and also constructed in such manner that the friction is reduced to a minimum by the disposition of the bearings.

The invention consists in the matters hereinafter set forth, and more particularly pointed out in the appended claims.

In the drawing, Figure 1 is a view in central vertical section of a turn-table and y above this floor to keep the mechanism clear of moisture. A pedestal cap 4t of suitable material preferably cast metal, rests on the top of the pedestal and is provided with an annular raceway 5 surrounding a central opening over a recess in the pedestal. A sleeve 6 is concentrically supported or anchored within the raceway by suitable means, as radial arms which preferably consist of fin plates 7 reinforced at their top by angle irons S or like flange stifl'ening members, recesses being formed in the pedestal to clear the outer portions of the arms. An end thrust bearing raceway 9 is formed on the lower end of the sleeve 6 which is suitably enlarged for this purpose. A circular rim 10, either of wood or preferably of channel iron, is connected by radial beams 11 of wood or metal of suitable mill shape, preferably I-bearns, with a center' bearing disk or plate 12, the inner ends of the beams being cut obliquely with the web of each entering a radial slot in the plate. A ring 13 with depending guide flange 14 is secured concentrically to the rim 10 on the underside of the beams 11 to retain balls 15 in the raceway 5. A plate 16 of sheet metal or like suitable material is interposed between the ring 13 and the beams 11 and has a center aperture in axial alinement with the anchor .sleeve 6. Obviously the sleeve with its bearing, and the raceway may be formed integrally or may be built up in any preferred manner. y

A pin 17 passes loosely through the sleeve G and has at its lower end a head 18 with oilretaining flange 19, the head coacting with the raceway 9 to retain thrust 'balls 20. The upper portion of the pin is screwthreaded and is engaged by jam nuts 21 on either side of the plate 1G and a cap nut 22, the upper end of the pin and nut lying flush with a platform 23 that completes the turntable, a shield 24 protecting the pin. Suitable oil pipes 25 lead from the top of the turn-table to the two raceways. The turntable beams 11 are thus fulcrumed on the upper ball-bearing' and by shifting the Jam nuts which retain the plate 16 on the anchor pin, the desired camber or pitch can be readily given to the beams so that, especially when under load, the turn-table has a crowned center. Also any load on the beams outside of the center ring bearing is taken care of by the thrust bearing on the lower part of the anchor pin. Any tendency to tilt is likewise resisted. by the lower ball-bearing.

By this construction a turn-table is obtained which can be given the desired pitch for draining rapidly and which is readily turned owing to the peculiar construction of its bearings, there being no contact between the table proper and the pit either at the center rim of the table or at the pedestal save through the upper ball-bearing of comparatively small diameter and the anchor pin bearing. Furthermore, the main bearing or upper raceway is of comparatively small diameter so that it is easily kept true and is not liable to distortion as are the bearing tracks of a turntable of conventional type. There is no center journal bearing, the anchor pin being free to rotate without contacting with the pedestal cap or other stationary parts, and the upper raceway and lower thrust bearing may get con siderably out of axial alinement without affecting the operation of the table. l

Obviously, changes in the details of construction may be made without departing from the spirit of the invention and I do not care to limit myself to any particular form or arrangement of parts.

What I claim is 1. The combination with a pedestal having an annular ball bearing thereon, a pin anchored to the pedestal by a thrust ball bearing alined with the annular bearing, securing the lower end of the pin to the pedestal, the upper portion of the pin being movable laterally, and a turn-table on the annular bearing whose inner portion is adjustable longitudinally on the pin to which it is secured.

2. The combination with a pit having a center pedestal, of an annular bearing plate on the pedestal, an anchor pin secured concentrically in the bearing of the plate, and a turn-table traveling on the annular bearing with its inner portion adjustable longitudinally on the anchor pin.

3. Thecombination with a pit having a center pedestal and an annular bearing thereon, of an anchor pin, a thrust bearing resisting` endwise movement of the pin and a turntable having outwardly extending members supported between their ends on the vannular bearing, the inner ends of said members being adjustable longitudinally on the pin.

4. The combination with a pit having a central bearing pedestal of a plate on the pedestal having an annular raceway, an anchor pin, an end thrust bearing resisting endwise movement of the pin, and a turntable having outwardly extending members fulcrumed between their ends on the annular bearing and secured at their inner ends to the pin by means affording adjustment longitudinally of the pin.

5. The combination with a pit having a central bearing pedestal, of a cap on the pedestal, a sleeve concentrically secured on the cap, a pin extending loosely through the sleeve, a thrust ball-bearing resisting upward movement of the pin in the sleeve, a plate adjustable longitudinally on the pin, an annular ball-bearing between the plate and pedestal plate concentric with the sleeve, beams extending outwardly from the plate over the ball-bearing, and a platform on the beams.

6. The combination with a pit having a central bearing pedestal, of a cap on the pedestal, a sleeve secured on the cap, a pin extending loosely through the sleeve, a

thrust ball-bearing resisting upward movement of the pin in the sleeve, a plate longitudinally adjustable on the pin, an annular ball-bearing between the plate and pedestal plate concentric with the sleeve, beams extending outwardly from the plate over the bearing, a platform onthe beams, and means for feeding lubricant to the bearings from the platform.

7. The combination with a pit having a central bearing pedestal, of a cap on the pedestal having a central opening encircled by an annular ball-raceway, an anchor pin sleeve secured to the cap concentrically within t-hc raceway, an anchor pin extending loosely through the sleeve, having an enlarged lower head, a ball thrust bearing between the head and lower end of the sleeve, a plate through which the upper portion of the pin passes, jam-nuts longitudinally adjustable on the pinfor clamping the plate, balls in the raceway, a ring on the plate running on the balls, beams fulcrumed over the ring and secured to the plate, and a platform on the beams. A

8. The combination with a pit having a central pedestal and inclined draining floor, of a cap on the pedestal, an anchor pin rotatable in the cap, an annular ball bearing on the cap normally concentric with the pin, a ball thrust bearing resisting upward movement of the pin in the cap, a bearing plate longitudinally adjustable on the pin, beams fulcrumed on the ball-bearing with the inner ends underrunning Athe bearing plate, and a platform on the beams.

9. The combination with a pit having a central pedestal of a cap on the pedestal, a sleeve secured to the cap, an annular ballbearing on the cap concentric with the sleeve, an anchor pin extending vloosely through the sleeve and having an enlarged lower head and a screwthreaded upper portion, a bearing plate on the upper portion of the pin, nuts securing the plate in adjusted position, an end thrust ball bearing between the head of the pin and the sleeve,

beams fulcrumed on the cap bearing with the inner portions underrunning the bearing plate, and a platform on the beams.

10. The combination with a pit having a central pedestal, of a cap on the pedestal, a sleeve secured to the cap, an annular ballbearing on the cap concentric with the sleeve, an anchor pin extending loosely through the sleeve having an enlarged lower head and a screwthreaded upper portion, a bearing plate on the upper portion of the pin, nuts securing the plate in adjusted position, an end thrust ball bearing between the head of the pin and the sleeve, beams fulcrumed on the cap bearing with the inner portions Vunderrunning the bearing plate, a platform on the beams, and oil tubes leading from the platform to both bearings.

1l. The combination with a pit having a central pedestal, a sleeve secured to the cap, an annular ball-bearing on the cap concenl trie With the sleeve, an anchor pin extending loosely through the sleeve having an enlarged lower head and a serewthreaded upper portion, a bearing plate on the upper i portion of the pin, nuts securing the plate I in adjusted position, an end thrust balli bearing between the head of the pin and the sleeve, radial mill shape beams ulcrumed on the cap bearing With the inner portions of the Webs entering undercut slots in the bearing plates.

In testimony whereof I afiX my signature l5 in presence of tWo Witnesses.

THADDEUS C. BEACH. Witnesses:

OTTO F. BARTHEL, ANNA C. RAVILER.

Copies of this patent may be obtained for ive cents each, by addressing' the Commissioner of Patents,

Washington, D. C. 

